Splash-plate for concrete-mixers.



a. SPLASH PLATE PUB CONCRETE? APPLICATION FILED MALQQ, 1911.

gg g g g Eatmted Mar. 18, 1913.

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UNITED STATES PATENT oraroa.

CHARLES E.-BATHRICK OF CHICAGO, ILLINOIS, ASSIGNOR T FREDERICK .C. AUSTIN,

OF CHICAGO, ILLINOIS.

SPLASH-PLATE FOR CONCRETE-FIBERS.

Specification of Letters Patent. t t Mar. 13, 1 1

Application filed March 30, 1911. Serial No. 617,838.

' Concrete-Mixers, of which the following is a specification.

My invention relates to concretemixers of the kind in which a rotary receptacle is employed, and in which a movable spout is provlded for the delivery of the mixture, the

said spout being movable into the open side of the receptacle when the batch of concrete is ready for discharge; In the operation of a concretemixer of this type it has been found that the said opening inthe'side of the rotary receptacle is productive of some trouble and annoyance, as it allows the Water and wetportionof the mixture toslop over This, of course, is objectionable, as it interferes to some extent with the proper mixing of the materials, involves a: constant loss of cement, and keeps things outside of and around'the mixer pretty well mussed up most of the time.

My inventioncontemplates, therefore, a

concrete mixer of this general character in which the spout which moves in and out of the open side of the rotary receptacle is provided with a plate-or curtain'that automatically closes the opening when the spout is moved out of the receptacle to permit a batch or quantity of concrete to be thoroughly mixed before being discharged. In this way the opening in the side of the rotary receptacle is closed while the materials are being introduced and mixed, and the water and wet portions of the mixture cannot slop over, as will hereinafter more fully appear.

In the accompanying drawings, Figure 1 is a front elevation of 'a mixer embodying the principles of my invention. Fig. 2 1s a section on line 22 in Fig. 1, showing the rear portion of the mixer broken away for convenience OflllllSiIflilOIl.

As thus illustrated, the mixer is of the kind commonly known as a batch mixer, be-

ing provided with a rotary cubedike receptacle A having a horizontal axis that extends through two diametrlcallyopposite corners thereof. It has a dischargeopemng The discharge spout B is of the ordinary form, being composed of an outer stationary section band an inner movable section b The outer section 1) 1s supported on a bracket arm 6 and the inner section b is supported on the sides of a swinging yoke 6 which latter is pivoted at its lower end 011 bearings b on the frame or base C of the machine. The section b is above and in a position to discharge into the section b when the section b is in the rotary receptacle, as shown in Fig. 2. In such position the section 12' receives the concrete, as the latter is carried up and then dropped, and discharges it into the section b, whereby the batch is delivered from the machine. While the mixture of a fresh batch of materials is going on, the section b is moved out to the p sitio-n shown in dotted lines.

In orderto prevent the water and wet portion from splashing and slopping out' while the machine is in operation, and while the spout is withdrawn, a splash plate or curtain D is provided and hinged at (Z at its upper end to the inner end of the spout. 1

While the machine is discharging, the said splash plate or curtain hangs inside of the receptacle, as shown in Fig. 2; but when the inner section of the spout is withdrawn, the said plate D hangs against the lower edge of the opening a, as shown in dotted lines thus closing said, opening and preventing the contents from splashing or slopping out.

The action is entirely automatic, as the withdrawal of the spout is allthatis neces- I sary to cause the splash plate D to close the openiside of the rotary receptacle. In this way the objectionable splashing and slop-" ping out of the wet materials is prevented.

I do not limit myself to the exact form or construction of splash plate shown. As shown and described, it hangs in position 'withits upper edge presented to the'falling concrete, when the machine is discharging, and consequently it does not interfere with the desired tumbling about and mixing of the concrete. But means of any suitable ternating with each other in occupying said character can be provided for closing thcl opening in the receptacle, without departing from the spirit of my invention.

hat I claim as my invention is 1. In a mixing machine, a rotary receptacle having a discharge. opening in one end. thereof, a discharge spout movable into and out of the said receptacle, through the said pening. and means normally within said receptacle, operable by the movement of the spout in and out of the receptacle, andheld in position for closing the said opening while the machine is mixing but not discharging, said means and spout thereby alopening, and said means having movement relative to said spout.

2. In a mixing machine, a rotary receptacle having a discharge openin in one end thereof, a discharge spout movaole into and out of the said receptacle, through the said opening, and means brought into position for closing the said opening, when the spout is moved out of the receptacle, and while the machine is mixing but not discharging, said means consistingof a plate hinged at its upper edge to the inner end of said spout, which plate is always inside of the receptacle.

In a mixing machine, a rotary receptacle having a discharge opening in'one end thereof, a discharge spout movabl into and out of the said receptacle, through the said opening, a device for operating said spout, and means thereby brought into position for closing the said opening, when the spout is moved out of the receptacle, and while the machine is mixing but not dischargingsaid means being carried on the said spout and movable relative thereto.

4:. In a mixing machine, a rotary receptacle having a discharge opening in one end thereof, a discharge spout movable into and out of the said receptacle, through the said opening, a device for operating said spout, and means thereby brought into position for. closing the said opening. when the spout is moved out of the receptacle. and while the machine is mixing but. not discharging, the said means being pivoted on the said spout and movable relative thereto about a horizontal axis thereon.

5. In a mixing machine, a rotary mixing recepta le having a mixing chamber provided with a discharge opening, and a splash plate for said opening. arranged to hang a distance away from said opening and wil in the said chamber while the madliine is dis harging. and movable supporting means for said plate. whereby said plate is always l vertical and movable bodilv outward Ztndr held. in position to close said opening when the machine is mixing but not discharging. l

(5. In a mixing machine, a rotary receptacle having a discharge opening in the side thereof, a discharge spout movable into and out of the said receptacle, through the said opening, and meansoperated by said spent for closing the said opening, while the machine is mixing but not discharging, and when the spout is moved out of the receptacle, said means consisting of a plate hinged at its upper edge to the inner end of said spout, which plate hangs inside of said receptacle, in a vertical plane at right-angles to the axis of rotation, while the machine is mixing but not discharging.

T. A mixing machine comprising a rotary receptacle provided with an axial discharge opening in one end thereof,,means movable into said opening to discharge the mixture,

and a splash plate inside of the mixing chamber of said receptacle, disposed in vertical position a distance back from said opening, when the machine is discharging, and in position to obstruct said opening when the machine is mixing but not discharging. I

8. A mixing machine having a rotary receptacle provided with a discharge opening,

a movable splash plate for said opening, a

movable spout. for said opening, operating means whereby said plate and spout alternate with each other in movably occupying said opening, and means whereby the angle of said plate relative to said receptacle is the same for all positions of said spout.

9. In a mixing machine, a rotary recep-,

tacle having a discharge opening in one end thereof, a discharge spout movable in and out of the said receptacle, through the said opening, and means distinct from said spout, operable by the movement of the spout out of the receptacle, and held in position for closing the said opening while the machine mixing but not discharging, said means and spout thereby alternating with each other in occupying said opening, said means being pivotallv suspended on the under side of said spout.

10. A mixing machine having a rotary receptacle provided with a discharge opening, a movable splash plate for said opening. a movable spout for said opening, the said plate and spout being distinct from each other, and operating means whereby said plate and spout alternate with each other in movablv occupying said opening. said plate being pivotallv suspended on the under side of said spout.

Signpd by me at Chicago, Cool: county, Illinois. this 27th day of March 1911.

CHARLES E. BATHRICK.

.l'itnesses:

R. B. Kuinxs,

H. Cuzco. 

